There are a few of very popular recording software. The most popular ones being ProTools, Logic, Sonar, Cubase, Acid Pro, and Reaper.
The best way to pick a recording software is just too look at the features you need. Like Mac or PC, plug-in format, track count, audio interface options, routing features, and price.
For Mac you pretty much can choose any of them except Sonar.
For PC you pretty much can choose any of them except Logic
VST is the most common format for free plug-ins. ProTools and Logic both do not support VST plug-ins.
ProTools is limited to 48 tracks. Most other recording software is unlimited or much higher.
ProTools is limited to M-Audio interface (ProTools M-Powered) and Digidesign interfaces (ProTools Le and HD)
Most software allows any ASIO supported audio interfaces.
Almost all software has the same routing options now although I prefer the easy routing in ProTools the best.
Reaper is by far the best bang for the buck. Starting at right at $60 for a fully functioning high quality recording software.
They all sound pretty much the same though. So it’s all in what you can afford, what you need, and what you like.